What do you think lowers down the processing speed of the smartphone?

[Stardom22]

In a matter of fact, the processing speed of most smartphones reduces as soon as it's being used. For instance a new phone would work swiftly than the two to three year's old phone. What do you think?

 

[eLdavis]

Full storage is definitely one of the major causes. When the phone storage is full, it often slows down the phone.